taking into account the body panel gaps , that are filled in on a cad model , this model is actually quite close 5mm or so to when I measure an actual part.
So what I have done is take measurements from the model , redraw them next to the panel - rounded up slightly , and used the angles measured and come up with these glass panels . I have then overlayed them back ontop of the engine bonnet and look good.
The car model is not mine and I respect (c) , but the glass panels I will upload here, with a couple of pics to show the size differences.
Forgot this front view - bonnet open pic..